Fabric cutting machine



Jan. 9, 1940. H, R 2,186,583

FABRIC CUTTING MACHINE Filed July 21, 1958 s Sheets-Sheet 1' 4\ 66 J! is 62 67 INVENTOR dward/ifimfl Jan. 9, 1940. GROH 2,186,583

FABRI C CUTTING MACHINE Filed July 21, 1938 3 Sheets-Sheet 2 INVENTOR 5%wrd f/ ra/z 'ATT, NE

Jan. 9, 1940. E. H. GROH 2,186,583

' FABRIC CUTTING MACHINE Filed July 21, 19 38 5 Sheets-Sheet 5 l .79 /Z/ I I 7 44 an lllll Illll l:- IS X m INVENTOR Ad .E /5/ I Edward H Gro/z ATTOE Patented Jan. 9, 1940 Edward H. Groh, Cincinnati, ohm, assignor to The ODonnell Rubber Products Company, Cincinnati, Ohio, a corporation of Ohio I a l ipplication July 21, 1938, Serial No. 22ll,4'75

"8 Claims. (01. 164-69) This invention relates to improvements in fabric cutting machines,and more particularly to a fabric cutting machine, the various operations of which are automatically controlled.

An object of this invention is to provide in a .f-abric cutting machine. automatic means for severing uniform sections or narrow rolls, from a Wide master bolt or roll of fabric;

A further object of the invention is to provide an automatic cutting machine which cleanly severs individual sections or narrowrolls of fabric from a'wide master roll.

Still a further object of the'invention is to pro-.

vide in an. automatic cutting machine automatic machine stop means which are actuated when certain parts thereof assume a certain predeter mined relationship.

Still a further. objectis to provideafabric cut- "ting machine having means associated therewith for preventing the unwinding of the severed'sections. Y

These and other objects are attained by the means described herein, and disclosed'in the accompanying drawings, in which:

Fig. 1 is a perspective view of afabric cutting 'machine embodying the'invention.

Fig. 2 is an end view of the machine shownin Fig. 1. certain non-essential parts being omitted for clarity of detail. r

. Fig. '3 is a plan view of a 'detailof the inventioin. I

Fig. 4 is a fragmentaryview'of'parts shown in Fig.' 3. Fig. 5 is an end View of a camcomprising a detail of the invention.

Fig; 6 is a view ofdisassembled parts comprising a detail of the invention disclosed in Fig. 4.

Fig. '7 is a fragmental view of the invention showinga detail thereof. 1

Fig. 8 is-a 'fragmental top View of the detail shown in Fig. "7.

Fig. 9 is a sectional view ofa detail of the invention. Q l

Fig. 10 is a sectional view of a detail comprisingthe invention. a

The machine comprising this invention will, solely. for clarity of detail and bywayof exemplification, be described as a machine for cutting 'narrow'sectio'ns of fabric from a wide or master roll'of fabric, and for purpose ofexample only, theword fabric as hereinafter used refers to adhesively coated'fabiic, such as reinforcing tape as used by the shoe manufacturers.

ihe reinforcing tape isfed through suitable guidemembers to the taping machines where such tape is applied to the shoe uppers, and since the taping machines are operated at a high rate ofspeed the reinforcing tape is, pulled through the guide members ata rapid rate. In order that the reinforcing tapemayfreely passthrough such ,5 guide members, it is essential that the width of the tape be uniformand constant. Likewise, it is highly desirable thatthe Width of various individual narrow rolls of reinforcing tape be uniform in order-that the taping machinesmay op- 10 crate at maximum efficiency at all times. It is to provide automatic means for cutting uniform sections or narrow rolls froma wide master roll of fabric that this invention is primarily directed.

For clarity of understanding a brief descrip- '18 tio n oihow the;.machi11e comprisingthis invention operates will begiven before the detailed description thereof.

A'wide'roll Him-hereafter referredto as the master roll of, fabric from which narrow sections 2 or rolls ifil areftobe cut is rotatably mounted upon a drivenshaft 21. A rotating knife I02 is advanced into saidrotating master rollof fabric --whereby a narrow roll as 'IBI is severed from the .master roll'. The knife is retracted after each cut away from the master-roll. The narrow roll thus severed istransferred to the left byreason of the taper of a. mandrel 40 being deposited upon a =non-revolving .shafti45, where said severed or narrow rolls are maintained until a'numbenof such rolls have accumulated as to warrant their removal, at whichtime they may all be removed at once. As the. rotary kni'fe is retracted away fromthe master roll after each cut, the entire master roll isfmoved a predetermined'distance to theleft whereby a new section of the ma'sterrollis presented for the rotating knife to sever upon its next forward cycle. Since .the fabric C0111? prising the master, roll may beadhesively coated the rotating knife has a marked tendency to. lose 40 itscuttingedgeand also to become covered-with particles of #adhesive and cloth. A rotatinggrind wheel is provided rearward of the machine for grinding-a new edge on said knife each time it is I retracted vawayifrom -the; master roll after each cut. Likewise means are provided for continuously wipingtheblad'e free of adhesive and cloth particles. Inorder to assure clean knife cuts any suitable lubricant. is continually supplied to said blade. sharpened atthe end of each cut, said blade wears By reason of the rotating knife being '5 away ratherqui'ckly, with the result that-the longer a blade is used its, diameter becomes pro-' portion'ally. less so that the rotating knife must be advanced through a greater arc'in order to 5 completely sever a section from the master roll. Heretofore the cutting blade was manually advanced into and retracted from the master roll whereby the problem of advancing the blade through a greater are to compensate for wear was very simply accomplished. Likewise, the step-b-y-step feed of the master roll into the cutting plane of the rotating knife was manually controlled with the result that it was impossible to obtain any number of sections or narrow rolls of fabric from a master roll, which were of the same width, due to the human errors which are ever present.

Applicant has provided automatic means for. causing the rotating knife to be advanced into and retracted away from the master roll and for automatically advancing the master roll in an even equal step-by-step movement relative to said blade, and in order to prevent destruction of the rotating blade after substantially all of a master roll has been severed into narrow rolls, there are provided automatic stop means for stopping the machine until such time as the relationship of the parts is changed to a nonclashing or non-intercepting or non-destructive relationship.

As shown in Fig. l, the-machine comprises a structural framework including parallel, spaced angle irons supported at either end upon suitable leg members 2| between which drive shaft 22 is rotatably mounted. Two fixed guide members 23 and 24 extend longitudinally of said framework being supported by suitable end brackets as 25 and 2B. A driven shaft 2'! is provided above and in the vertical plane of guide members 23 and 24 one end being supported by end bracket 26, the length intermediate its ends being supported by a moving carriage bracket member 28 which is free to slide longitudinally upon guide members 23 and 24, Figs. 1 and 7. The end of shaft 27 opposite bracket 26 is supported by a swivel bracket member 29 which may be moved to the left against the force of a spring 30 whereby bearing members 3| and 32 which normally engage the ends of shaft 21 and guide member 24 respectively, are'caused to disengage said members, whereby bracket 29 may be swiveled about guide member 23 as a pivot. A suitable'collar 33 secured to the end of guide member 23 provides a stop against which spring 30 acts and it also prevents bracket member 29 from being accidentally pulled off the end of said guide member. A face plate 341s slidably keyed to driven shaft 21 in such a manner as to permit longitudinal movement relative to shaft 27 although keyed to rotate with said shaft, Fig. 9, by means of key 42 carried by boss 43.

As clearly shown in Fig. 9, the master roll comprises a hollow center core 36 of cardboard or other suitable material around which the adhesivelycoated fabric 31 is wound. Such a roll is positioned upon shaft 21 by swiveling bracket member 29 out of alignment with the end of said shaft whereby roll I00 can be slipped over the now open end of shaft 27. An annular collar supports the end of the master roll adjacent face plate 34, the other end of said roll being supported by shoulder 39 of a tapered mandrel 49 which is secured to driven shaft 21 by any suitable means such as pin 4|. Suitable holding means such as sharpened holding prongs carried by face plate 34, are adapted to tightly grip the outer circumference of master roll lllll whereby said roll is caused to rotate with plate 34.

An annular groove 43 is provided circumferentially of mandrel 40, said groove being of such a depth as to accommodate the cutting edge of the rotating knife I02 after it passes through the cardboard core 36 of roll I08. The mandrel tapers off to the left of said groove whereby a narrow roll as llll after being severed from master roll H10 will be carried to the left away from groove 43 by reason of the rotation and taper of said mandrel.

An idler shaft 45 is provided intermediate mandrel and bearing member 3| of shaft 21, said shaft being spaced from shaft 2'! by means of suitable ball bearings as 46 and 41. The outside diameter of idler shaft 45 should not exceed the diameter of the tapered end of mandrel 40 whereby narrow severed rolls as lfll are free to slide upon said idler shaft 45 from mandrel 40. By reason of the ball bearing supports of shaft 45 said shaft will not rotate with driven shaft 21, with the advantageous result that the narrow severed rolls HJI are not rotatably maintained on idler shaft 45. This is highly desirable since a narrow severed roll, because of its inherent properties, tends to unwind itself even when caused to rotate at the same speed as the master roll from which it was cut.

Heretofore the narrow rolls after being severed from the master roll were permitted to rotate on and with driven shaft 27 with the result that they would unwind and become unfit for commercial use, however, by means of idler shaft 45 this dimculty has been efficiently and inexpensively overcome. When the length of shaft 45 is well filled with a plurality of narrow severed rolls, they may be removed by swiveling bracket 29 away from the end of shaft 21, as is done when mounting the masterroll, whereby the idler shaft may be slipped off of shaft 21 and the narrow rolls thereon transferred in an orderly, stacked manner to the storage or shipping department.

By reference to Figs. 1 and7, it will be seen that shaft 27 is driven by means of a chain 48 which is driven by sprocket 49 to drive shaft 22. A suitable guard as 50, may be disposed over said drive means as a safety measure. Drive shaft 22 is driven by any suitable means such as split pulley 5| which may be connected to any suitable source of power, not shown, by means of a belt as 52. It should be here noted that the master roll I96 is caused to rotate whenever the machine is in operation, since the connection between driven shaft 21 and drive shaft 22 is a direct one.

Face plate 34 and master roll I00 are propelled longitudinally of the device by means of movable carriage bracket 28 which in turn is caused to slide longitudinally of guide members 23 and 24 in response to the pull of chain 53, the opposite ends of which are anchored to said bracket as at 54 and 55 (Fig. 7). Chain 53 is supported at either end by suitable sprocket wheels 56 and 51, sprocket wheel 56 being the drive sprocket and sprocket 51 an idler.

The master roll is advanced to present a new section of material to the rotating knife after each narrow roll has been severed therefrom, said master roll being fixed against longitudinal movement during each cutting operation, whereby the master roll is advanced in a step-by-step manner relative to said rotating knife.

The action of the rotating knife I02 and stepvby-step advancement of the master roll is accomplished in the following manner:

A. driven crank shaft 59 rotatably mounted betweensuitable bracket'members 60, is provided whichtime blade 1 02.15 caused tocontact a conmember 29 by any suitable means such as by welding, or by means of bolts, not shown. .A clutch is provided for controlling the operation of said crankshaft, said clutch comprising a driving sprocket wheel 6! and a driven member 62 which is keyed to crankshaft 59 and longituclinally slidable thereon whereby pins 262 may engage said driving sprocket 6!. As shownin Fig. 3 the clutch is disengaged whereby sprocket wheel 6! is free to rotate relative to drive shaft 55? which is stationary. I

By reference to Fig. 2, it is seen that'power is transmitted from drive shaft 22 to gear reduction box 63 by means of chain 64 and from gear reduction box fit to sprocket Gl by meansjof' chain 65.

One end of crank shaft'59'terminate's incrank secured to one bracket member 69 by any suitable means such as bolts, not shown. An aperture i is provided centrally of cam t! to accommodate'crankshaft tiil which is free to rotate therein. Driven cam member 66 may be secured to crankshaft 59 by any suitable means such as by means of a key 7!. Member 86 comprises a boss l2, which terminates in two parallel spaced legs 13 and '54 each of which is vertically grooved as at 15. A cam follower I6 is carried by a U-shaped member l1 having spaced. parallel legs l8 and 19. A tongue 81! is provided intermediate each leg adapted for sliding cooperation within grooves l5, of drivenmember fiii;

An adjustable connecting link 8| also having'aj tongue Sllfor cooperation with grooves 15,-is positioned laterally between legs 18 and 79 of. U-

shaped member l? by means of a threaded bolt as which engage'scomplementary threads 83 of link 8!. Threaded bolt 82 is adapted to'be rotated in legs l8 and 19 but is of itself axially stationary therebetween. This is accomplished by any suitable means not shown. Rotationof bolt 32 causes connecting link8l to be moved intermediate legslfi and} 19.. A pin 84 is carried by said linkage member to which a connecting rod as 85 may be secured.

-In operation crankshaft. 59 causes driven cam] member 68 to be rotated relative to stationary cam 6'! whereby U-shaped member '11, is caused,

to oscillate within grooves 15 ascam follower 16' travels around cam groove 68. By regulating the positionof link member 81 relative to arms 18' and 79 of said U-shaped member a greater or less amount of" throw is imparted to connecting rod As shown in Fig. 2 rotating knife N32 is pivotally mounted relative to guide member 24 by means i of support armv 8 i whichisoperatively connected to actuating arm til which terminates in a knife control. handle 88, so, that by pulling downward on handle {it rotating blade H12 describes'an are about guide member M as it advances toward masterroll it; Rotating blade I02 is directly driven from driy e-shaft 22 by suitable means such as a chain drive, not shown. As'shown in Fig. 2, the rotating knife is in .a retracted; position, at

through its smallest arc.

adjust tinuously operating grinding or dressing wheel 89' which issuitablymounte'd to the structural framework ofthe machine by means of a bracket as S9. Dressing wheel '89 isfdirectly driven from drive shaft 22 by means of pulley .;9l, belt 92, pulley 93 and belt 94 as clearly shown. The diameter of rotating knife 102 becomesless and less as the blade isused, due to the abrasive ac tion of wheel 89, so that as the blade becomes smaller it is-necessary to move knifecontrol handle 38 through a greater are in order to move blade H12 a distance suilicient to completely out throng the fabric comprising the master roll.

This adjustment is accomplished by means of bolt 82 which" controls the relative position of linkage member ti, relative to -U-shaped cam driven member 1?; Connecting rod 85. is operatively connectecl' to-knife control handle 8 by I means of pins! through which the upper threaded end 92' of connecting rod 85 extends. Relative adjustment is obtained between pin 9! and connecting rod 85 by means of adjustment nut 93.

"Whenblade'HIZ is new the bolt 82% is turned so that linkage member 8! rests against inner leg 19 of 'U- shaped member "l1,

throw WhflbY'hfllldlG 83 is pulled downward Adjustment nut 92 is then positioned upon connecting rod 85 so that r the cutting edge of blade 6 32 will ent'er'but not touch the bottom of, groove 43 of mandrel (Fig; 9) when the cam is at the'bottom of its downward throw. As knife Hi2 wears away the are through which handle 38 is: moved, is increased by adiusting bolt 82 whereby: linkage member ll whereby the effective stroke of the camis increased with the result that the wearof blade I82 iscompensatedfor. In this manner it, is automatically possible to cause therotating For any given position of nutSZ this setting gives a minimum member 8! is moved toward legIl'jB' o'f U-shaped blade to'be advancedinto and'retracted from as hereinbeforeset forth. As shown in Figs. 2-, 3,

and 8,*driven sprocket wheel 56 is controlled by ratchet 96which cooperates witlrratchet wheel '9'! which is-suitably geared to operateshaft 98.

the effective cam stroke to compensate towhichspr'ocket wheel is secured byany suitable'mea'ns such as by a key, not shown;

One end ofreciprocating' lever 96, which carries ratchet'36,is pivotally mounted to shaft 202 the other endbeing operatively associated with connecting rod 94 whichtranslates the rotary motion of crank 58 through pin '95 to a rec1pro-' eating motion of lever '99. The'number' of degrees through which ratchet wheel ii! is turned each time lever 99 is moved downward, is contrailed -by' means of adjustable cover plate ms which may be selectively" rotated. relative .to ratchet wheel'il'l as to uncover more or less teeth tobe engaged by ratchet 96.

It'should be here noted that the throw of crank "58 is at least lallizbehind thethrow of cam 51 whereby carriage 28 will. be advanced one "step -When the rotating'blade N32 is inv its retracted position. This relationship is importantin order that the forward edge of the master roll of fabric will clear thecutting blade, the usefulness of which would be destroyed should the master-roll be forcedlaterally against saidblade.

In orderkto prevent face plate 34; ,from coming matic machine stop means are provided. These means comprise a long belt shift control rod I04 (Figs. 7 and 8) which extends longitudinally of the machine structure, one endterminating in spaced parallel fingers I between which the drive belt 52 is disposed. By moving control rod I04 to the left drive belt 52 is caused to engage drive pulley 5!, whereas movement to the right shifts belt 52 onto the idler pulley I5I.

Control rod I84 is maintained to the left against the tension of spring H36 by means of a trip latch It'I which carries a downward extending lip I08 which engages the square edge of sleeve I58 which is secured relative to control shaft I04 by any suitable means, as a pin not shown. Trip latch III'I is secured to a trip lever shaft III! which extends transversely of framework 20. One end of said shaft may be extended forward of the machine and turned upward to form a hand trip lever as I I I. An auxiliary lever H2 is secured to shaft I II), by any suitable means, and extends upward and forward of shaft. III! as clearly shown in Fig. 7. An enlarged collar I I3 is secured to the end of auxiliary lever I I2 in such a manner as to be in line with and thereby easily forced downward by the lower front edge of lower guide bearing member IM whereby trip lever shaft I III is rotated counterclockwise thereby causinglatch lip I08 to be raised and disengage sleeve I09. This permits spring I05 to pull control rod IM to the right whereby the belt is shifted onto the idler pulley I5I. Control rod I04 may be moved to the left to engage latch I01 with sleeve I59 by means of a suitable lever II5. In this manner the machine is completely stopped before the various parts thereof assume an intercepting and destructive relationship.

In order to maintain the rotating knife I02 in an efficient cutting condition, it is necessary that it be sharpened after each cut, as hereinabove set forth. It also becomes necessary to lubricate and wipe said blade during its rotation in order for it to cleanly cut through the master roll. .Such lubrication and wiping action is accomplished by means of a housing I It which is mounted to blade guard II'I by any suitable means such as bolts or set screws H8. As shown in Fig. 10, a lubricant trough H9 is provided having suitable discharge outlets as ZIII and I20 located through bottom wall I I2I. A lubricant may be continuously and constantly supplied to said trough through valve I22 whichis supported by a suitable bracket I23 which may be secured to one wall of the trough II!) by means of any suitable means such as a weld, not shown. Valve I22 is connected to a source of lubricant supply through a suitable through outlets M9 and IZIJ is absorbed by the felt or other suitable pads I25 and I26 which are disposed in contact with and on opposite sides of blade I52. Pads I25 and I25 are housed within removable containers I21 and I28 respectively, each being secured below trough I I9 by any suitable means such as set screws I29 which engage trough-bottom depending lugs I30.

The pads are held against blade III? by means of platesI3I, which are positioned by means of set screws I32, as clearly disclosed in Fig. 10.

Lubricant absorbed by the felt pads I25and I26 is deposited on knife I02 and any particles from dressing wheel 89 or from the roll of fabric being severed, are wiped from the blade by such moistened felt pads.

It is practically impossible to obtain speedy,

track 55 has been flattened'as at '59.

into the cutting plane of the rotating blade autoclean cuts unless the rotating blade is constantly moistened and wiped, and both of these operations are effectively and efficiently simultaneously performed by the above described means.

From the foregoing it is apparent that I have produced an automatic fabric cutting machine, the rotary blade of which is automatically moistened and wiped during its entire cycle of being automatically advanced into a master roll of fabric and retracted therefrom, and I have likewise provided automatic means for advancing a master roll in a definite, accurate, predetermined step-by-step manner whereby the thickness of each narrow roll severed from the master roll is the same. Further I have provided automatic safety means for stopping the machine so that the rotating knife cannot operate at those times when to so operate would damage the machine.

It should be noted that a clutch 62 for con trolling the operation of the rotating knife control lever 83 andratchet step-by-step advance mechanism has been provided. The reason for this is to permit blade I02 to be sharpened for an indefinite period of time as contrasted from the short period of time'provided when said blade is under the control of cam 51. Such indefinite sharpening periods are necessary each time a new blade is installed'since a proper, exact and keen cutting edge must beprovided before a roll of fabric can be neatly severed. Likewise in the event the blade should, for some unforseen reason, become too dull to be sufficiently sharpened while momentarily retracted under control of cam (.3? further or prolonged sharpening may be ac complished by disengaging clutch t2. In this respect it should be noted that adjustm-cnt nut 52 fixes the distance handle 88 is depressed by connecting rod 85, however, no abutment means is provided on connecting rod 85 below pin 5i for positively retracting knife It2..

The weight of knife IE2 is so distributed relative to guide member 24 about which it pivots that said: knife is ever urged to move into its fully retracted position as shown in Fig. 2, therefore as crank shaft 85 is lifted by cam 51 the revolving blade I52 and associated mechanism are permitted to retract and come to rest upon a suitable stop member, not shown. When in a retracted position the facing wheel IE9 is in operative alignment with said blade. By urging blade I52 only forward into cutting position it is free to momentarily pause in a retracted position as connecting rod 85 passes upwardly through the aperture in pin El and down again until adjustment nut 32 contacts pin BI, or as connecting rod 35 is moved through the uppermost portion of its cycle. In this way the sharpening period of blade IE2 is greater than it would be were connecting rod relatively fixed to pm QI,

The stroke of connecting rod 85 need not be changed every time a new master roll is mounted, since groove 34 is of sufiicient depth to accommodate. the amount of blade which would normally be ground off of a blade after several master rolls have been severed into narrow rolls.

It should also be noted that a portion of cam This is done in order to decrease the rate of advance of knife I52 as it is advanced into the master roll of material on its cutting cycle, since said blade must be permitted to cut its way through roll I02 rather than forced through said roll, since to force the blade through amaster roll of fabric produces uneven ridges in the severed section and it is also destructive to the blade. However, these disadvantages are effectively overcome by flattening track 68 as at 69. The-reason for using this method of slowing down the rate of advance of said blade instead of slowing down the entire machine is to provide a means for slowly advancing the blade while maintaining a high R. P. M.. of said blade necessary to properly cut through operating ratchet wheel 91 manually in those instances when carriage member 28 is moved to the right as when a new master roll is mounted and for controlling bracket 28 at those times other than when said bracketmcmber is being automatically propelled.

What is claimed is: p

1. In a device of the class described the combination of a driven shaft for supporting and rotating a roll of material to be cut into narrow rolls, means for advancing a rotating knife into and away from said roll of material and means for advancing said roll of material a definite predetermined distance into the cutting plane of said knife after each narrow roll has been severed from said roll of material, and means disposed on said driven shaft for non-revolvably supporting the narrow severed rolls.

2. In a device of-the class described the combination of a driven shaft for rotatably support ing a roll of material to be cut into narrow rolls,

means for advancing a rotating knifeinto and away from said rolls, means for advancing said roll of material in an even predetermined step by step manner into the cutting plane of said knife after each cutting cycle thereof, and means for non-revolvably supporting the narrow severed rolls comprising a hollow sleeve spaced from and frictionlessly mounted relative to the driven shaft. a

3. In a device of the class described the com-. bination of a driven shaft for supporting and rotating a roll of material to be out into narrow rolls, means for advancing a rotating knife into and away from said roll of material and means for advancing said roll of material a definite predetermined distance into the-cutting 'plane of said knife after each narrow roll has been severed from said roll of material, means dis-' posed on said driven shaft for non-revolvably supporting the narrow severed rolls, and means controlled by the relative position of the roll advancing means and the rotating knife for stopsaid absorbent means extending from the open side of each container for contactingsaid tool, means associated within said containers for maintaining said absorbent means .in contact with said tool for cleaning and lubricating said,

tool.

5. In a device of the class described a work piece and a tool, means for advancing the work piece in a step by step manner toward said tool,

' said means comprising a driven shaft, a crank arm carried by said shaft, a clutch operated by said crank through a connecting rod, and driving means controlled by said clutch foradvancing said work piece in one direction only, and means synchronized with said work piece advance mechanism for advancing said tool into thework comprising a second crank carried by said driven shaft and disposed relative to said first crank whereby its effective throw is synchronized relative to the throw of the first crank whereby'the work is advanced subsequent to the retraction of said tool out of the plane of said work, and means for adjusting the effective throw of said means comprising a drivenshaft and a driven I member secured'to said driven shaft, a U-shaped member adapted to slidably engage said driven member, a cam, said cam being non-rotatably mounted relative to said driven shaft,'a cam track follower carried by said U-shaped member,

a linkage member'disposed intermediate the legs.

of said U-shaped member, said linkage member being adjustable between said legs whereby the effective stroke of said cam may be varied for increasing the degree of advance of said tool into said work piece.

said driven shaft for rotatably supporting a roll of material to be cut into narrow rolls, means for advancing a rotating knife into and away from said roll, means for advancingsaid roll of material in an even predetermined step by step manner into the cutting plane of said knife after each cutting cycle thereof, means disposed on said driven shaft for non-revolvably supporting the narrow severed rolls, and means disposed intermediate the cutting plane of said knife and said severed roll supporting means for laterally shifting each narrow roll upon severance from said roll, onto said non-revolvable supporting means.

8. Ina device of'the class described the combination of a driven shaft including a mandrel for supporting and rotating a roll of material to be cut into narrow rolls, means for advancing a rotating knife into and away from saidroll of material and means for advancing said roll of material a definite predetermined distance into the cutting plane of said knife after each narrow roll has been'severed from said roll of material, means disposed on said driven'shaft for nonrevolvably supporting the narrow severed rolls, the diameter of said non-revolvable shaft being less than the diameter of the roll supporting mandrel adjacent the cutting-plane of said knife, that portion of said mandrel intermediate said non-revolvable shaft and the cutting plane of said knife being tapered off to saidnon-revolvable shaft for laterally shifting each severed roll from said rotating mandrel onto said nonrevolvable shaft.

' EDWARD H. GROH. 

